1
|
Gudasheva TA, Deeva OA, Mokrov GV, Dyabina AS, Yarkova MA, Seredenin SB. Design, Synthesis and Anxiolytic Activity Evaluation of N-Acyltryptophanyl- Containing Dipeptides, Potential TSPO Ligands#. Med Chem 2019; 15:383-399. [DOI: 10.2174/1573406415666181119164846] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 11/10/2018] [Accepted: 11/12/2018] [Indexed: 11/22/2022]
Abstract
Background:The 18 kDa translocator protein (TSPO), previously known as the peripheral- type benzodiazepine receptor, plays a key role for the synthesis of neurosteroids by promoting transport of cholesterol from the outer to the inner mitochondrial membrane, which is the ratelimiting step in neurosteroid biosynthesis. Neurosteroids interact with nonbenzodiazepine site of GABAa receptor causing an anxiolytic effect without the side effects.Methods:Using the original peptide drug-based design strategy, the first putative dipeptide ligand of the TSPO N-carbobenzoxy-L-tryptophanyl-L-isoleucine amide (GD-23) was obtained. Molecular docking of GD-23 in the active pocket of the TSPO receptor using Glide software was carried out. The lead compounds GD-23 and its analogues were synthesized using activated succinimide esters coupling method. The anxiolytic activity of GD-23 and its analogues was investigated in vivo, using two validated behavioral tests, illuminated open field and elevated plus-maze.Results:he in vivo studies revealed that the following parameters are necessary for the manifestation of anxiolytic activity of new compounds: the L-configuration of tryptophan, the presence of an amide group at the C-terminus, the specific size of the N-acyl substituent at the Nterminus. Compound GD-23 (N-carbobenzoxy-L-tryptophanyl-L-isoleucine amide) demonstrated a high anxiolytic-like effect in the doses of 0.05–1.0 mg/kg i.p. comparable with that of diazepam. Compound GD-23 was also active in the open field test when was administered orally in the doses of 0.1-5.0 mg/kg. The involvement of TSPO receptor in the mechanism of anxiolytic-like activity of new compounds was proved by the antagonism of compound GD-23 with TSPO selective inhibitor PK11195 as well as with inhibitors of enzymes which are involved in the biosynthesis of neurosteroids, trilostane and finasteride.Conclusion:A series of N-acyl-tryptophanyl-containing dipeptides were designed and synthesized as 18 kDa translocator protein (TSPO) ligands. Using a drug-based peptide design method a series of the first dipeptide TSPO ligands have been designed and synthesized and their anxiolytic activity has been evaluated. In general, some of the compounds displayed a high level of anxiolytic efficacy comparable with that of diazepam. The involvement of TSPO receptor in the mechanism of anxiolytic activity of new compounds was proved using two methods. On this basis, the N-acyl-Ltryptophanyl- isoleucine amides could potentially be a novel class of TSPO ligands with anxiolytic activity.
Collapse
Affiliation(s)
| | - Olga A. Deeva
- Federal State Budgetary Institution , Russian Federation
| | | | | | | | | |
Collapse
|
2
|
Clerici E, Scheghter I, Villa ML, Marocchi A. Poly-DL-alanyl skin isograft rejection by purified anti-poly-DL-alanyl antibodies. TISSUE ANTIGENS 2008; 4:21-30. [PMID: 4209666 DOI: 10.1111/j.1399-0039.1974.tb00220.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
3
|
Lachmann PJ, Strangeways L, Vyakarnam A, Evan G. Raising antibodies by coupling peptides to PPD and immunizing BCG-sensitized animals. CIBA FOUNDATION SYMPOSIUM 2007; 119:25-57. [PMID: 3015516 DOI: 10.1002/9780470513286.ch3] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The use of PPD (purified protein derivative of tuberculin) as a carrier has several significant advantages. It provides very powerful T cell help and it gives rise to virtually no antibody response against itself. This is particularly useful if it is intended to go on to make monoclonal antibodies, where the presence of a large amount of anti-carrier antibody is a nuisance! Furthermore, unlike most comparably powerful adjuvant systems, it can be used in man. PPD coupling has been used to raise antibodies to haptens and to raise T cell responses to tumour cells. It is here reported that small peptides coupled to PPD will give rise to good titres of anti-peptide antibody. For peptides that contain no cysteine, coupling has been achieved by attaching succinimidyl 4-(N-maleimidomethyl) cyclohexane-1-carboxylate (SMCC) to the alpha-amino group of the peptide and N-succinimidyl 3-(2-pyridyldithio) propionate (SPDP) to the PPD and allowing an uncleavable bond to form between them. Data on immunization with the leucotactic nonapeptide of the alpha chain of the complement component C3 and with some oncogene-related peptides have been obtained.
Collapse
|
4
|
Sela M. From proteins and protein models to their use in immunology and immunotherapy. J Biol Chem 2003; 278:48507-19. [PMID: 13679360 DOI: 10.1074/jbc.x300007200] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Affiliation(s)
- Michael Sela
- Department of Immunology, The Weizmann Institute of Science, Rehovot, Israel 76100.
| |
Collapse
|
5
|
A new alpha-helical coiled coil protein encoded by the Salmonella typhimurium virulence plasmid. J Biol Chem 1992. [DOI: 10.1016/s0021-9258(19)49833-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
6
|
Gregor M, Riecken EO. Production and characterization of N-terminally and C-terminally directed monoclonal antibodies against pancreatic glucagon. Gastroenterology 1985; 89:571-80. [PMID: 3839481 DOI: 10.1016/0016-5085(85)90453-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Hybridoma technology has been successfully applied to the production of monoclonal antibodies against a variety of small soluble peptides. We report herein for the first time on the development of monoclonal antibodies to pancreatic glucagon. Twenty-three stable positive hybridomas were detected by radioimmunoassay from five separate fusions and cloned by the limiting dilution method. Four selected monoclonal antibodies were all of the IgG 2a subclass type kappa and bound to protein A. One monoclonal antibody (23.8B6) was shown to be directed toward the C-terminal region and another (23.6B4) toward the N-terminal to central region of the glucagon molecule. These antibodies did not cross-react with any of the other peptides tested. Two further monoclonal antibodies (23.4A1, 22.3A6) reacted with the C-terminal third of the glucagon molecule and showed a cross-reaction with the structurally related gastric inhibitory polypeptide of 0.7% and 9.1%, respectively. All but the C-terminal monoclonal antibody 23.8B6 showed a marked cross-reaction with ileal extracts. The N-terminally directed monoclonal antibody 23.6B4 was of sufficient avidity for use in the radioimmunoassay of pancreatic glucagon and gut glucagon-like immunoreactivity in tissue extracts, being sensitive to changes of pancreatic glucagon of 2.0 fmol/tube at a final titer of culture supernatant of 1:1.4 X 10(5). In gel permeation chromatography of intestinal extracts, two major peaks were detectable (Kav 0.27 and 0.54). The present findings show that monoclonal antibodies provide sensitive tools for detecting pancreatic glucagon and gut glucagon-like immunoreactivity. They will be valuable immunoreactants for the development of immunoradiometric assays as well as for large-scale immunoaffinity purification of gut glucagon-like immunoreactivity.
Collapse
|
7
|
Schleifer KH. 5 Analysis of the Chemical Composition and Primary Structure of Murein. METHODS IN MICROBIOLOGY 1985. [DOI: 10.1016/s0580-9517(08)70474-4] [Citation(s) in RCA: 441] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
8
|
Gozes I, Milner RJ, Liu FT, Johnson E, Battenberg EL, Katz DH, Bloom FE. Monoclonal antibodies against vasoactive intestinal polypeptide: studies of structure and related antigens. J Neurochem 1983; 41:549-55. [PMID: 6875552 DOI: 10.1111/j.1471-4159.1983.tb04774.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Hybridomas secreting monoclonal anti-vasoactive intestinal polypeptide (VIP) antibodies were constructed from spleen cells sensitized to VIP in vitro. The secreted antibodies were characterized by binding to VIP in indirect radioimmunoassays and enzyme-linked immunosorbent assays. Two monoclonal antibodies, characterized for their binding activities with synthetic fragments of VIP, were found to bind different sites on the VIP molecule. These monoclonal antibodies may recognize tertiary structures of the VIP. A search was conducted for antigens recognized by the monoclonal antibodies in brain: brain proteins separated on polyacrylamide gels were electroblotted onto nitrocellulose filters and were reacted first with the mouse antibody and then with goat anti-mouse immunoglobulin coupled to horseradish peroxidase as a means of detection. The monoclonal antibodies were found to react with a protein of molecular weight 60,000, which was also recognized by polyclonal antibodies, although the latter reacted with a number of additional proteins. The relationship of the protein of molecular weight 60,000 to VIP is discussed.
Collapse
|
9
|
|
10
|
Seidl PH, Schleifer KH. The immunochemistry of peptidoglycan. Serological detection of a difference in a single N-terminal amino acid. Mol Immunol 1979; 16:385-8. [PMID: 489055 DOI: 10.1016/0161-5890(79)90104-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
11
|
Seidl PH, Schleifer KH. Specific antibodies to the N-termini of the interpeptide bridges of peptidoglycan. Arch Microbiol 1978; 118:185-92. [PMID: 697508 DOI: 10.1007/bf00415728] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The synthetic peptides Gly5-epsilon-Ahx and L-Ala3-epsilon-Ahx, with structural similarity to the interpeptide bridge peptides of staphylococci or micrococci, respectively, were convalently linked to human serum albumin via their carboxylgroups. Antisera to these synthetic peptidyl-protein antigens contained fairly high amounts of antibodies with specificity to the N-terminal parts of the peptide chains attached to the carrier proteins. Antisera to (Gly5-epsilon-Ahx)20-albumin gave, without exception, strong precipitin reactions in latex-agglutination with staphylococcal peptido-glycans. The antisera completely failed, however, in any reaction with peptidoglycans of micrococci or other bacteria which did not have these oligo-glycine peptides typical for staphylococci. On the contrary, antisera to (l-Ala3-epsilon-Ahx)22-albumin strongly precipitated micrococcalpeptidoglycans with oligo-L-alanine interpeptide bridges (e.g. Micrococcus varians. Micrococcus roseus), but showed no significant reaction with peptidoglycans of staphylococci or other bacteria lacking oligo-L-alanine interpeptide bridges.
Collapse
|
12
|
Seidl PH, Schleifer KH. Rapid test for the serological separation of staphylococci from micrococci. Appl Environ Microbiol 1978; 35:479-82. [PMID: 637545 PMCID: PMC242865 DOI: 10.1128/aem.35.3.479-482.1978] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
A simple test for the serological separation of staphylococci from micrococci is described, which is based on the quite different cell wall peptidoglycan structures of these two genera. Antisera to (pentaglycyl-epsilon-amino-n-hexanoic acid)20-albumin agglutinated without exception all staphylococci and gave no positive reaction with micrococci or other bacterial cells. To obtain a good reaction, it was necessary to extract the cells with hot trichloroacetic acid for 30 min. Antisera to (tri-L-alanyl-epsilon-amino-n-hexanoic acid)22-albumin reacted strongly with micrococci containing oligo-L-alanine bridges in their peptidoglycan, but did not agglutinate staphylococci or other bacteria lacking alanine interpeptide bridges.
Collapse
|
13
|
Wieczorek Z, Starościk K, Lisowski J, Zimecki M. Synthetic antigens. II. Immunogenic, antigenic and adjuvant properties of a copolymer of styrene and maleic anhydride. Eur J Immunol 1975; 5:157-9. [PMID: 1234051 DOI: 10.1002/eji.1830050216] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Immunogenic, antigenic and adjuvant properties of a polyanionic copolymer of styrene and maleic anhydride (PSM) are described. The results obtained showed that PSM was immunogenic in BALB/c mice when administered without adjuvant, the optimal dose being 0.01 mug/mouse. Antibodies could be detected only by precipitation in gel but not by agglutination. High molecular weight polymer (290 000 daltons) was a stronger immunogen and antigen than copolymers of lower molecular weights (85 000-210 000 daltons). PSM also showed adjuvant activity and enhanced the humoral response of mice against sheep red blood cells. Adjuvanticity was found only when 1 mug of PSM/mouse was applied. The results obtained suggest that PSM interacts with B rather than T cells.
Collapse
|
14
|
|
15
|
Schleifer KH, Seidl PH. The immunochemistry of peptidoglycan. Antibodies against a synthetic immunogen cross-reacting with peptidoglycan. EUROPEAN JOURNAL OF BIOCHEMISTRY 1974; 43:509-19. [PMID: 4134036 DOI: 10.1111/j.1432-1033.1974.tb03438.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
16
|
Pilz I, Kratky O, Licht A, Sela M. Shape and volume of anti-poly(D-alanyl) antibodies in the presence and absence of tetra-D-alanine as followed by small-angle x-ray scattering. Biochemistry 1973; 12:4998-5005. [PMID: 4796922 DOI: 10.1021/bi00748a028] [Citation(s) in RCA: 73] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
17
|
Helgeland S, Grov A, Schleifer KH. The immunochemistry of Staphylococcus aureus mucopeptide. I. Antigenic specificity of the peptide subunits. ACTA PATHOLOGICA ET MICROBIOLOGICA SCANDINAVICA. SECTION B: MICROBIOLOGY AND IMMUNOLOGY 1973; 81:413-8. [PMID: 4128947 DOI: 10.1111/j.1699-0463.1973.tb02224.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
18
|
Speyer JL, Emans JB, Kimball JW, Pappenheimer AM. Quantitative studies of the specificity of anti-pneumococcal polysaccharide antibodies, types 3 and 8. V. Cross-reacting antibodies in rabbit antisera. IMMUNOCHEMISTRY 1973; 10:257-63. [PMID: 4146959 DOI: 10.1016/0019-2791(73)90203-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
19
|
Taussig MJ, Mozes E, Shearer GM, Sela M. Cooperation of antigenic determinants in intact mice and interference by antigenic competition. Eur J Immunol 1972; 2:577-81. [PMID: 4120279 DOI: 10.1002/eji.1830020619] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
20
|
Abstract
Several cases of modifications of functional properties of proteins upon specific interaction with antibodies have been reported in the last few years. The purpose of this paper is to discuss evidence that these effects may be due to conformational changes in the protein molecule.
Collapse
|
21
|
|
22
|
|
23
|
Tarrab R, Schechter I, Sela M. Antibody response to polyalanyl determinants in tolerant rabbits. IMMUNOCHEMISTRY 1971; 8:1107-15. [PMID: 4113504 DOI: 10.1016/0019-2791(71)90390-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
24
|
Licht A, Schechter B, Sela M. Antibodies against polyalanyl determinants attached to negatively or positively charged carriers. Eur J Immunol 1971; 1:351-9. [PMID: 4110257 DOI: 10.1002/eji.1830010510] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
25
|
Schechter B, Schechter I, Ramachandran J, Conway-Jacobs A, Sela M, Benjamini E, Shimizu M. Synthetic antigens with sequential and conformation-dependent determinants containing the same L-tyrosyl-L-alanyl-L-glutamyl sequence. EUROPEAN JOURNAL OF BIOCHEMISTRY 1971; 20:309-20. [PMID: 4103320 DOI: 10.1111/j.1432-1033.1971.tb01395.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
26
|
Conway-Jacobs A, Schechter B, Sela M. A comparison of the antigenic specificity of random and ordered linear polypeptides composed of L-tyrosine, L-alanine and L-glutamic acid. EUROPEAN JOURNAL OF BIOCHEMISTRY 1971; 20:325-9. [PMID: 4103321 DOI: 10.1111/j.1432-1033.1971.tb01397.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
27
|
|
28
|
Schechter I, Clerici E, Zakepitzki E. Distinct antigenic specificities of alanine peptide determinants attached to protein carriers via terminal amino or carboxyl groups. EUROPEAN JOURNAL OF BIOCHEMISTRY 1971; 18:561-72. [PMID: 4100466 DOI: 10.1111/j.1432-1033.1971.tb01277.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
29
|
Schechter I. Mapping of the combining sites of antibodies specific for poly-L-alanine determinants. Nature 1970; 228:639-41. [PMID: 4097538 DOI: 10.1038/228639a0] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|